Events from the year 1864 in Denmark.
Incumbents Monarch – Christian IX Prime minister – Ditlev Gothard Monrad (until 11 July), Christian Albrecht Bluhme
Events
February 1 February – The Second Schleswig War breaks out after the First Schleswig War had left the Schleswig-Holstein Question unsettled when Preussia-Austria crosses the River Eider with 57,000 soldiers. 6 February – Battle of Sankelmark, a minor battle which occurs at Sankelmark, on the road between Schleswig and Flensburg, during the Danish retreat from Danevirke. 29 February – The Battle of Vorbasse, another minor engagement.
March 17 March – The Battle of Jasmund near the Prussian island of Rügen results in a tactical Danish victory.
April 17 and 18 April – Denmark suffers a severe defeat to the German Confederation in the Battle of Dybbøl which effectively decides the war.
May 9 May – Denmark wins a tactical victory in the Battle of Heligoland but it has no impact on the outcome of the war. 12 May – A general armistice came into effect, Denmark has lost the war.
June 29 June – In the Battle of Als, the last major engagement of the war, the Prussians secure Als after a night attack masterminded by the Chief of Staff Leonhard Graf von Blumenthal.
July 3 July – The Battle of Lundby in north-eastern Himmerland results in great Danish losses. It becomes the last battle of the Second Schleswig War. 8 July – The Cabinet of Monrad is succeeded by the Cabinet of Bluhme.
October 30 October – The Second Schleswig War ends. The Duchies of Schleswig, Holstein and Lauenburg are ceded to Prussia. 18 October – HDMS Peder Skram is launched at Nyholm in Copenhagen.
Undated
Births January–March
9 February – August Hassel, sculptor (died 1942) 18 March Carl Oluf Jensen, vetenarian (died 1934)
April–June 10 April – Clara Lachmann, Danish-Swedish patron of the arts (d. 1920) 6 May – Jens Christian Kofoed, architect (died 1941) 15 May – Vilhelm Hammershøi, painter (died 1916) 23 May – Louis Glass, composer (died 1936) 14 June – Niels Viggo Ussing, mineralogist (died 1911)
July–September 12 July – Carl Brummer, architect (died 1953) 16 August – Kristian Hude, photographer (died 1929) 1 September – Albert Edvard Wang , painter (died 1930)
October–December 16 October Vilhelm Andersen, writer and historian (died 1953) 15 November – Sophus Falck, manufacturer and founder of Falck (died 1926)
Deaths
January–March 15 February – Adam Wilhelm Moltke, landowner and politician (born 1785) 28 March – Princess Louise Charlotte, princess of Denmark (born 1789)
AprilJune 7 June Carl Heinrich Delcomyn, gunsmith (born 1800)
July–September 14 August – Christopher Puggaard, geologist (born 1823) 7 September - Gustav Friedrich Hetsch, architect (born 1788) 20 September – Caspar Peder Rothe Ingerslev, politician 18oo)
October–December 20 October – Carl Christian Rafn, historian, translator and antiquarian (born 1795) 17 November – Peter Christian Knudtzon, businessman (born 1789)
References